c7a6abf853
--color now highlights files with capabilities (#449985)
258 lines
8.8 KiB
Diff
258 lines
8.8 KiB
Diff
From 7634188624dc7f48c047b29fab3715dc7a468059 Mon Sep 17 00:00:00 2001
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From: Kamil Dudka <kdudka@redhat.com>
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Date: Wed, 23 Jul 2008 09:52:05 +0200
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Subject: [PATCH] ls: --color now highlights files with capabilities, too
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* configure.ac: New option: --disable-libcap. Check for libcap usability.
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* src/Makefile.am (dir_LDADD, ls_LDADD, ...): Append $(LIB_CAP).
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* src/ls.c: [HAVE_CAP] Include <sys/capability.h>.
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(has_capability): New function for capability detection.
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(print_color_indicator): Colorize file with capability.
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* src/dircolors.c: Update color lists.
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* src/dircolors.hin: Mention new CAPABILITY color attribute.
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* tests/ls/capability: Test for ls - colorize file with capability.
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* tests/Makefile.am (TESTS): Add ls/capability.
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* NEWS: Mention the change.
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---
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NEWS | 2 ++
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configure.ac | 13 +++++++++++++
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src/Makefile.am | 6 +++---
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src/dircolors.c | 4 ++--
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src/dircolors.hin | 1 +
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src/ls.c | 43 +++++++++++++++++++++++++++++++++++++++++--
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tests/Makefile.am | 1 +
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tests/ls/capability | 43 +++++++++++++++++++++++++++++++++++++++++++
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8 files changed, 106 insertions(+), 7 deletions(-)
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create mode 100755 tests/ls/capability
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diff -ruN coreutils-6.12.old/configure.ac coreutils-6.12/configure.ac
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--- coreutils-6.12.old/configure.ac 2008-07-24 14:16:32.000000000 +0200
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+++ coreutils-6.12/configure.ac 2008-07-24 14:18:51.000000000 +0200
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@@ -58,6 +58,19 @@
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LIB_SELINUX="-lselinux"
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AC_SUBST(LIB_SELINUX)])
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+dnl Check whether libcap is usable
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+AC_ARG_ENABLE([libcap],
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+ AC_HELP_STRING([--disable-libcap], [disable libcap support]),
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+ AC_MSG_WARN([libcap support disabled by user]),
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+ [AC_CHECK_LIB([cap], [cap_get_file],
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+ [AC_CHECK_HEADER([sys/capability.h],
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+ [LIB_CAP="-lcap" AC_DEFINE(HAVE_CAP, 1, [libcap usability])],
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+ [AC_MSG_WARN([header sys/capability.h was not found, support for libcap will not be built])]
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+ )],
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+ [AC_MSG_WARN([libcap library was not found or not usable, support for libcap will not be built])])
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+ ])
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+AC_SUBST([LIB_CAP])
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+
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AC_FUNC_FORK
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optional_bin_progs=
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diff -ruN coreutils-6.12.orig/src/Makefile.am coreutils-6.12/src/Makefile.am
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--- coreutils-6.12.orig/src/Makefile.am 2008-07-10 12:30:03.000000000 +0200
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+++ coreutils-6.12/src/Makefile.am 2008-07-24 13:18:43.000000000 +0200
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@@ -98,15 +98,15 @@
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# for clock_gettime and fdatasync
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dd_LDADD = $(LDADD) $(LIB_GETHRXTIME) $(LIB_FDATASYNC)
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-dir_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_SELINUX)
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+dir_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_SELINUX) $(LIB_CAP)
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id_LDADD = $(LDADD) $(LIB_SELINUX)
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-ls_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_SELINUX)
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+ls_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_SELINUX) $(LIB_CAP)
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mktemp_LDADD = $(LDADD) $(LIB_GETHRXTIME)
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pr_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME)
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shred_LDADD = $(LDADD) $(LIB_GETHRXTIME) $(LIB_FDATASYNC)
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shuf_LDADD = $(LDADD) $(LIB_GETHRXTIME)
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tac_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME)
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-vdir_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_SELINUX)
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+vdir_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME) $(LIB_SELINUX) $(LIB_CAP)
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tac_LDADD = $(LDADD) $(LIB_CLOCK_GETTIME)
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## If necessary, add -lm to resolve use of pow in lib/strtod.c.
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diff --git a/src/dircolors.c b/src/dircolors.c
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index 56194f7..79109b9 100644
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--- a/src/dircolors.c
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+++ b/src/dircolors.c
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@@ -63,14 +63,14 @@ static const char *const slack_codes[] =
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"SYMLINK", "ORPHAN", "MISSING", "FIFO", "PIPE", "SOCK", "BLK", "BLOCK",
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"CHR", "CHAR", "DOOR", "EXEC", "LEFT", "LEFTCODE", "RIGHT", "RIGHTCODE",
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"END", "ENDCODE", "SUID", "SETUID", "SGID", "SETGID", "STICKY",
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- "OTHER_WRITABLE", "OWR", "STICKY_OTHER_WRITABLE", "OWT", NULL
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+ "OTHER_WRITABLE", "OWR", "STICKY_OTHER_WRITABLE", "OWT", "CAPABILITY", NULL
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};
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static const char *const ls_codes[] =
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{
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"no", "no", "fi", "rs", "di", "ln", "ln", "ln", "or", "mi", "pi", "pi",
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"so", "bd", "bd", "cd", "cd", "do", "ex", "lc", "lc", "rc", "rc", "ec", "ec",
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- "su", "su", "sg", "sg", "st", "ow", "ow", "tw", "tw", NULL
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+ "su", "su", "sg", "sg", "st", "ow", "ow", "tw", "tw", "ca", NULL
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};
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#define array_len(Array) (sizeof (Array) / sizeof *(Array))
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verify (array_len (slack_codes) == array_len (ls_codes));
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diff --git a/src/dircolors.hin b/src/dircolors.hin
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index 38914c8..5137cc6 100644
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--- a/src/dircolors.hin
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+++ b/src/dircolors.hin
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@@ -77,6 +77,7 @@ CHR 40;33;01 # character device driver
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ORPHAN 40;31;01 # symlink to nonexistent file, or non-stat'able file
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SETUID 37;41 # file that is setuid (u+s)
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SETGID 30;43 # file that is setgid (g+s)
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+CAPABILITY 30;41 # file with capability
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STICKY_OTHER_WRITABLE 30;42 # dir that is sticky and other-writable (+t,o+w)
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OTHER_WRITABLE 34;42 # dir that is other-writable (o+w) and not sticky
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STICKY 37;44 # dir with the sticky bit set (+t) and not other-writable
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diff --git a/src/ls.c b/src/ls.c
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index 4b69f7d..9bc66a1 100644
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--- a/src/ls.c
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+++ b/src/ls.c
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@@ -38,6 +38,10 @@
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#include <config.h>
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#include <sys/types.h>
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+#ifdef HAVE_CAP
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+# include <sys/capability.h>
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+#endif
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+
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#if HAVE_TERMIOS_H
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# include <termios.h>
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#endif
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@@ -513,14 +517,14 @@ enum indicator_no
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C_LEFT, C_RIGHT, C_END, C_RESET, C_NORM, C_FILE, C_DIR, C_LINK,
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C_FIFO, C_SOCK,
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C_BLK, C_CHR, C_MISSING, C_ORPHAN, C_EXEC, C_DOOR, C_SETUID, C_SETGID,
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- C_STICKY, C_OTHER_WRITABLE, C_STICKY_OTHER_WRITABLE
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+ C_STICKY, C_OTHER_WRITABLE, C_STICKY_OTHER_WRITABLE, C_CAP
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};
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static const char *const indicator_name[]=
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{
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"lc", "rc", "ec", "rs", "no", "fi", "di", "ln", "pi", "so",
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"bd", "cd", "mi", "or", "ex", "do", "su", "sg", "st",
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- "ow", "tw", NULL
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+ "ow", "tw", "ca", NULL
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};
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struct color_ext_type
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@@ -553,6 +557,7 @@ static struct bin_str color_indicator[] =
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{ LEN_STR_PAIR ("37;44") }, /* st: sticky: black on blue */
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{ LEN_STR_PAIR ("34;42") }, /* ow: other-writable: blue on green */
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{ LEN_STR_PAIR ("30;42") }, /* tw: ow w/ sticky: black on green */
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+ { LEN_STR_PAIR ("30;41") }, /* capability: black on red */
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};
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/* FIXME: comment */
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@@ -3896,6 +3901,38 @@ print_type_indicator (bool stat_ok, mode_t mode, enum filetype type)
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DIRED_PUTCHAR (c);
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}
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+#ifdef HAVE_CAP
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+static bool
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+/* Return true if NAME has a capability (see linux/capability.h) */
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+has_capability (const char *name)
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+{
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+ cap_t cap_d;
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+ char *result;
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+ bool has_cap;
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+
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+ cap_d = cap_get_file (name);
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+ if (cap_d == NULL)
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+ return false;
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+
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+ result = cap_to_text (cap_d, NULL);
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+ cap_free (cap_d);
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+ if (!result)
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+ return false;
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+
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+ /* check if human-readable capability string is empty */
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+ has_cap = !!*result;
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+
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+ cap_free (result);
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+ return has_cap;
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+}
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+#else
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+static bool
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+has_capability (const char *name)
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+{
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+ return false;
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+}
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+#endif
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+
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/* Returns whether any color sequence was printed. */
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static bool
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print_color_indicator (const char *name, mode_t mode, int linkok,
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@@ -3923,6 +3960,8 @@ print_color_indicator (const char *name, mode_t mode, int linkok,
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type = C_SETUID;
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else if ((mode & S_ISGID) != 0)
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type = C_SETGID;
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+ else if (has_capability (name))
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+ type = C_CAP;
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else if ((mode & S_IXUGO) != 0)
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type = C_EXEC;
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}
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diff --git a/tests/Makefile.am b/tests/Makefile.am
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index c2da630..309d174 100644
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--- a/tests/Makefile.am
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+++ b/tests/Makefile.am
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@@ -313,6 +313,7 @@ TESTS = \
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ln/misc \
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ln/sf-1 \
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ln/target-1 \
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+ ls/capability \
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ls/color-dtype-dir \
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ls/dangle \
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ls/dired \
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diff --git a/tests/ls/capability b/tests/ls/capability
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new file mode 100755
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index 0000000..549e06b
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--- /dev/null
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+++ b/tests/ls/capability
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@@ -0,0 +1,43 @@
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+#!/bin/sh
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+# Ensure "ls --color" properly colorizes file with capability.
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+
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+# Copyright (C) 2008 Free Software Foundation, Inc.
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+
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+# This program is free software: you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License as published by
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+# the Free Software Foundation, either version 3 of the License, or
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+# (at your option) any later version.
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+
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+# GNU General Public License for more details.
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+
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+# You should have received a copy of the GNU General Public License
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+# along with this program. If not, see <http://www.gnu.org/licenses/>.
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+
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+if test "$VERBOSE" = yes; then
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+ set -x
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+ ls --version
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+fi
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+
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+. $srcdir/test-lib.sh
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+require_root_
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+
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+(setcap --help) 2>&1 |grep 'usage: setcap' > /dev/null \
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+ || skip_test_ "setcap utility not found"
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+fail=0
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+
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+# Don't let a different umask perturb the results.
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+umask 22
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+
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+touch test
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+setcap cap_net_bind_service=ep test \
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+ || framework_failure
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+code='30;41'
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+LS_COLORS="ca=$code" \
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+ ls --color=always test > out || fail=1
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+printf "\033[0m\033[${code}mtest\033[0m\n\033[m" > out_ok || fail=1
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+compare out out_ok || fail=1
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+
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+(exit $fail); exit $fail
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--
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1.5.4.1
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